package Atm01;

import java.util.Scanner;

/**
 * 方法版本的ATM
 */
public class ATM {
    static String [][] users = {
            {"aaaaaa","111111","1000"},
            {"bbbbbb","222222","2000"},
            {"cccccc","333333","3000"},
            {"dddddd","444444","4000"},
            {"eeeeee","555555","5000"}
    };
    static Scanner sc = new Scanner(System.in);
    static int index = 0;
    // 控制ATM流程的方法
    public static void process(){
        System.out.println("欢迎使用Lovo银行");
        while(true){
            login();
            menu();
        }


    }
    // 登录方法
    public static void login(){
        for(int i = 0;i < 3;i++){
            System.out.println("请输入账号：");
            String account = sc.next();
            System.out.println("请输入密码：");
            String pwd = sc.next();
            for(int j = 0;j < users.length;j++){
                if(users[j][0].equals(account) && users[j][1].equals(pwd)){
                    System.out.println("登录成功");
                    index = j;
                    return;
                }
            }
            System.out.println("账号或密码错误，请重新输入，还剩"+(2 - i)+"次");
        }
        System.out.println("次数用完，卡已被吞！");
        System.exit(0); // 系统结束

    }
    // 菜单界面
    public static void menu(){
        while(true){
            System.out.println("请选择：1-查询 2-存款 3-取款 4-转账 5-切换账号 6-退出 7-修改密码");
            int input = sc.nextInt();
            if(input == 1){
                search();
            }else if(input == 2){
                save();
            }else if(input == 3){
                get();
            }else if(input == 4){
                transfer();
            }else if(input == 5){
                System.out.println("账号登出");
                return;
            }else if(input == 6){
                System.out.println("谢谢使用，再见！");
                System.exit(0);
            }else if(input == 7){
                if(changePwd()){
                    System.out.println("已登出");
                    return;
                }

            }else{
                System.out.println("选择有误，请重新选择");
            }
        }

    }
    // 存款
    public static void save(){
        System.out.println("请输入存入的金额：");
        double money = sc.nextDouble();
        users[index][2] = Double.parseDouble(users[index][2]) + money + "";
        System.out.println("存款成功");
    }
    // 取款
    public static void get(){


    }
    // 查询
    public static void search(){
        System.out.println("您的余额为："+users[index][2]);
    }
    // 转账
    public static void transfer(){
        System.out.println("请输入转账金额：");
        double money = sc.nextDouble();
        // 判断余额是否足够
        if(money > Double.parseDouble(users[index][2])){
            System.out.println("余额不足");
            return;
        }
        System.out.println("请输入对方账号：");
        String otherAccount = sc.next();
        // 不能转给自己
        if(otherAccount.equals(users[index][0])){
            System.out.println("不能转给自己");
            return;
        }
        // 循环判断输入的账号是否存在
        for(int i = 0;i < users.length;i++){
            if(users[i][0].equals(otherAccount)){
                // 当前账户的钱扣去
                users[index][2] = Double.parseDouble(users[index][2]) - money + "";
                // 把钱加到对方账户上
                users[i][2] = Double.parseDouble(users[i][2]) + money + "";
                System.out.println("转账成功");
                return;
            }
        }
        System.out.println("输入的账号不存在");

    }
    // 修改密码
    public static boolean changePwd(){
        System.out.println("请输入原密码：");
        String oldPwd = sc.next();
        if(!oldPwd.equals(users[index][1])){
            System.out.println("原密码输入错误");
            return false;
        }
        System.out.println("请输入新密码：");
        String newPwd = sc.next();
        if(oldPwd.equals(newPwd)){
            System.out.println("新密码不能和原密码一样");
            return false;
        }
        System.out.println("请再次输入新密码：");
        String confirmPwd = sc.next();
        if(!newPwd.equals(confirmPwd)){
            System.out.println("两次密码不一致");
            return false;
        }
        users[index][1] = newPwd;
        System.out.println("密码修改成功");
        return true;

    }
    public static void main(String[] args) {
        process();
    }
}
